3'-Methylflavonol | 95911-71-0

• 分子结构分类: 有机化合物 - 苯丙烷和聚酮 - 黄酮类化合物
• 英文名称: 3'-Methylflavonol
• 英文别名: 3-hydroxy-2-(3-methylphenyl)-4H-1-benzopyran-4-one；3'-methyl-3-hydroxyflavone；3-hydroxy-2-(3-methylphenyl)-4H-chromen-4-one；3-hydroxy-2-(3-methylphenyl)chromen-4-one
• CAS: 95911-71-0
• 化学式: C₁₆H₁₂O₃
• 分子量: 252.269
• InChiKey: OAQDOUDNROECDO-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  3.8
• 重原子数：
  19
• 可旋转键数：
  1
• 环数：
  3.0
• sp3杂化的碳原子比例：
  0.06
• 拓扑面积：
  46.5
• 氢给体数：
  1
• 氢受体数：
  3

反应信息

• 作为反应物：
  描述：

  3'-Methylflavonol 在 N-溴代丁二酰亚胺(NBS) 、 偶氮二异丁腈 、 sodium hydride 作用下， 以 四氯化碳 、 二氯甲烷 为溶剂， 反应 18.5h， 生成 3-(methoxymethyl)oxy-3'-(bromomethyl)flavone
  参考文献：
  名称：

  Antimicrobial effects of novel siderophores linked to β-lactam antibiotics

  摘要：

  As a strategy to increase the penetration of antibiotic drugs through the outer membrane of Gram-negative pathogens, facilitated transport through siderophore receptors has been frequently exploited. Hydroxamic acids, catechols, or very close isosteres of catechols, which are mimics of naturally occurring siderophores, have been used successfully as covalently linked escorting moieties, but a much wider diversity of iron binding motifs exists. This observation, coupled to the relative lack of specificity of siderophore receptors, prompted us to initiate a program to identify novel, noncatechol siderophoric structures. We screened over 300 compounds for their ability to (1) support growth in low iron medium of a Pseudomonas aeruginosa siderophore biosynthesis deletion mutant, or (2) compete with a bactericidal siderophore-antibiotic conjugate for siderophore receptor access. From these assays we identified a set of small molecules that fulfilled one or both of these criteria. We then synthesized these compounds with functional groups suitable for attachment to both monobactam and cephalosporin core structures. Siderophore-P-lactam conjugates then were tested against a panel of Escherichia coli, Pseudomonas aeruginosa, and Staphylococcus aureus strains. Although several of the resultant chimeric compounds had antimicrobial activity approaching that of ceftazidime, and most compounds demonstrated very potent activity against their cellular targets, only a single compound was obtained that had enhanced, siderophore-mediated antibacterial activity. Results with tonB mutants frequently showed increased rather than decreased susceptibilities, suggesting that multiple factors influenced the intracellular concentration of the drugs. (C) 2000 Elsevier Science Ltd. All rights reserved.

  DOI：

  10.1016/s0968-0896(99)00261-8
• 作为产物：
  描述：

  2-acetylphenyl 3-methylbenzoate 在 氢氧化钾 、 碘苯二乙酸 、 硫酸 、 溶剂黄146 作用下， 以 吡啶 、 甲醇 为溶剂， 生成 3'-Methylflavonol
  参考文献：
  名称：

  Antimicrobial effects of novel siderophores linked to β-lactam antibiotics

  摘要：

  As a strategy to increase the penetration of antibiotic drugs through the outer membrane of Gram-negative pathogens, facilitated transport through siderophore receptors has been frequently exploited. Hydroxamic acids, catechols, or very close isosteres of catechols, which are mimics of naturally occurring siderophores, have been used successfully as covalently linked escorting moieties, but a much wider diversity of iron binding motifs exists. This observation, coupled to the relative lack of specificity of siderophore receptors, prompted us to initiate a program to identify novel, noncatechol siderophoric structures. We screened over 300 compounds for their ability to (1) support growth in low iron medium of a Pseudomonas aeruginosa siderophore biosynthesis deletion mutant, or (2) compete with a bactericidal siderophore-antibiotic conjugate for siderophore receptor access. From these assays we identified a set of small molecules that fulfilled one or both of these criteria. We then synthesized these compounds with functional groups suitable for attachment to both monobactam and cephalosporin core structures. Siderophore-P-lactam conjugates then were tested against a panel of Escherichia coli, Pseudomonas aeruginosa, and Staphylococcus aureus strains. Although several of the resultant chimeric compounds had antimicrobial activity approaching that of ceftazidime, and most compounds demonstrated very potent activity against their cellular targets, only a single compound was obtained that had enhanced, siderophore-mediated antibacterial activity. Results with tonB mutants frequently showed increased rather than decreased susceptibilities, suggesting that multiple factors influenced the intracellular concentration of the drugs. (C) 2000 Elsevier Science Ltd. All rights reserved.

  DOI：

  10.1016/s0968-0896(99)00261-8

文献信息

• Superior anticancer activity of halogenated chalcones and flavonols over the natural flavonol quercetin
  作者：Tatiana A. Dias、Cecília L. Duarte、Cristovao F. Lima、M. Fernanda Proença、Cristina Pereira-Wilson

  DOI：10.1016/j.ejmech.2013.04.064

  日期：2013.7

  chalcones whereas for flavonol derivatives the best performance was registered for the 4-substituted derivatives. Flow cytometry analysis showed that compounds 3p and 4o induced cell cycle arrest and apoptosis as demonstrated by increased S, G2/M and sub-G1 phases. These data were corroborated by western blot and fluorescence microscopy analysis. In summary, halogenated chalcones and flavonols were successfully

  通过生态友好的方法以高收率合成了一系列查尔酮和黄酮醇衍生物。用人结肠直肠癌细胞系HCT116进行药理评估，结果表明黄酮醇的抗癌活性高于查尔酮前体的抗癌活性。卤代衍生物的抗增殖活性随着B环的3-位或4-位正位的取代基从F到Cl和Br的增加而增加。此外，位置3的卤素增强了查耳酮的抗癌活性，而对于黄酮醇衍生物而言，4-取代衍生物的最佳性能则得到了证明。流式细胞仪分析表明化合物3p和4oS，G2 / M和sub-G1期增加证明细胞周期阻滞和凋亡。这些数据通过蛋白质印迹和荧光显微镜分析得到证实。总之，成功制备了卤代查耳酮和黄酮醇，并表现出很高的抗癌活性，如它们的细胞生长和对HCT116细胞的细胞周期抑制潜能（优于槲皮素）所显示的那样，它们被用作阳性对照。
• METHODS OF DESIGNING, PREPARING, AND USING NOVEL PROTONOPHORES
  申请人：Martineau Louis C.

  公开号：US20140135359A1

  公开（公告）日：2014-05-15

  The present invention provides a computer-assisted method of generating a protonophore requiring the use of a computer including a processor. The method includes: designing the protonophore, calculating, using the processor, an estimated protonophoric activity; producing the protonophore if the estimated protonophoric activity corresponds to an U 50 of about 20 μM or less; and determining the uncoupling activity of the protonophore. The present invention also provides novel protonophores that meet the above requirement and their methods of use.

  本发明提供了一种利用计算机辅助的方法来生成需要使用处理器的质子载体。该方法包括：设计质子载体，使用处理器计算估计的质子载体活性；如果估计的质子载体活性对应于大约20微米或更少的U50，则生产质子载体；并确定质子载体的解耦活性。本发明还提供了符合上述要求的新型质子载体及其使用方法。
• Understanding the Cardioprotective Effects of Flavonols: Discovery of Relaxant Flavonols without Antioxidant Activity
  作者：Cheng Xue Qin、Xingqiang Chen、Richard A. Hughes、Spencer J. Williams、Owen L. Woodman

  DOI：10.1021/jm070352h

  日期：2008.3.1

  3 ',4 '-Dihydroxyflavonol (DiOHF) is a cardioprotective flavonol that can reduce injury after myocardial ischemia and reperfusion and thus is a promising small molecule for the treatment of cardiovascular disease. Like all vasoactive flavonols reported to date, DiOHF is both relaxant and antioxidant, hindering investigation of the relative contribution of each activity for the prevention of reperfusion injury. This study investigates structure-activity relationships of variations at the 3 ' and 4 ' positions of the B ring of DiOHF and vasorelaxant and antioxidant activities. Relaxation of rat isolated aortic rings precontracted with KCl revealed that the most active flavonols were those with a 4 '-hydroxyl group, with the opening of potassium channels as a possible contributing mechanism. For the antioxidant activity, with the exception of DiOHF, none of the flavonols investigated were able to significantly scavenge superoxide radical, and none of the three most potent vasorelaxant flavonols could prevent oxidant-induced endothelial dysfunction. The discovery of single-acting vasorelaxant flavonols without antioxidant activity, in particular 4 '-hydroxy-3 '-methoxyflavonol, will assist in investigating the mechanism of flavonol-induced cardioprotection.
• The rearrangement of tosylated flavones to 1′-(alkylamino)aurones with primary amines
  作者：Wolfgang Kandioller、Mario Kubanik、Anna K. Bytzek、Michael A. Jakupec、Alexander Roller、Bernhard K. Keppler、Christian G. Hartinger

  DOI：10.1016/j.tet.2015.09.062

  日期：2015.11

  A rearrangement of 3-tosylflavone to the corresponding 1'-(alkylamino)aurone proceeds under mild conditions in the presence of primary amines in high yields. The reaction is applicable to different substituted 3-tosylflavones and alkyl amines and the respective aurones were isolated as a mixture of E/Z isomers. Further conversion of 1'-(methylamino)aurone to the corresponding thionated compound was performed by reaction with Lawesson's reagent and only the E isomer was obtained. This observation can be explained by the weaker exocyclic double bond, which facilitates rotation and the formation of the thermodynamically preferred E form. The characterization, preliminary biological investigations of the synthesized compounds and lipophilicity studies are discussed. (C) 2015 Elsevier Ltd. All rights reserved.
• Pharmacophore model of the quercetin binding site of the SIRT6 protein
  作者：S. Ravichandran、N. Singh、D. Donnelly、M. Migliore、P. Johnson、C. Fishwick、B.T. Luke、B. Martin、S. Maudsley、S.D. Fugmann、R. Moaddel

  DOI：10.1016/j.jmgm.2014.01.004

  日期：2014.4

  SIRT6 is a histone deacetylase that has been proposed as a potential therapeutic target for metabolic disorders and the prevention of age-associated diseases. We have previously reported on the identification of quercetin and vitexin as SIRT6 inhibitors, and studied structurally related flavonoids including luteolin, kaempferol, apigenin and naringenin. It was determined that the SIRT6 protein remained active after immobilization and that a single frontal displacement could correctly predict the functional activity of the immobilized enzyme. The previous study generated a preliminary pharmacophore for the quercetin binding site on SIRT6, containing 3 hydrogen bond donors and one hydrogen bond acceptor. In this study, we have generated a refined pharmacophore with an additional twelve quercetin analogs. The resulting model had a positive linear behavior between the experimental elution time verses the fit values obtained from the model with a correlation coefficient of 0.8456. Published by Elsevier Inc.